9 Hands-On Worksheet Punnett Square Worksheet - The Teach Simple Blog - Free Printable

Based on the instructions provided, I will solve the four genetics problems presented in the worksheet. Since the options `ExplainAnswer`, `TeachTopic`, and `GeneratePractice` are all set to `false`, I will proceed directly to solving the problems step-by-step and then provide the final answers in the required format.

Problem 1: Eye Color

Scenario:
* Father: Dominant brown eyes (BB)
* Mother: Recessive blue eyes (bb)
* Goal: Find the possible eye color of the child.

Step-by-Step Solution:
1. Identify Parents' Alleles:
* Father contributes alleles: B and B (written across the top).
* Mother contributes alleles: b and b (written down the side).
2. Fill the Punnett Square:
* Top-Left Box: Combine Father's B and Mother's b $\rightarrow$ Bb
* Top-Right Box: Combine Father's B and Mother's b $\rightarrow$ Bb
* Bottom-Left Box: Combine Father's B and Mother's b $\rightarrow$ Bb
* Bottom-Right Box: Combine Father's B and Mother's b $\rightarrow$ Bb
3. Determine Phenotype (Physical Trait):
* All offspring are Bb.
* Since B (brown) is dominant over b (blue), the presence of one B means the child will have brown eyes.

Result for Problem 1: All children will have Brown Eyes (Genotype: Bb).

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Problem 2: Hair Type

Scenario:
* Father: Curly hair (Cc)
* Mother: Straight hair (cc)
* Goal: Find the possible hair feature of the child.

Step-by-Step Solution:
1. Identify Parents' Alleles:
* Father contributes alleles: C and c (written across the top).
* Mother contributes alleles: c and c (written down the side).
2. Fill the Punnett Square:
* Top-Left Box: Combine Father's C and Mother's c $\rightarrow$ Cc
* Top-Right Box: Combine Father's c and Mother's c $\rightarrow$ cc
* Bottom-Left Box: Combine Father's C and Mother's c $\rightarrow$ Cc
* Bottom-Right Box: Combine Father's c and Mother's c $\rightarrow$ cc
3. Determine Phenotype:
* Genotypes: 50% Cc, 50% cc.
* Cc: Curly hair (Dominant trait).
* cc: Straight hair (Recessive trait).

Result for Problem 2: 50% chance of Curly Hair, 50% chance of Straight Hair.

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Problem 3: Flower Petals

Scenario:
* Parent 1: Red petals (Dominant) (RR)
* Parent 2: Yellow petals (Hybrid) (Rr)
* Goal: Determine new plant offspring.

Step-by-Step Solution:
1. Identify Parents' Alleles:
* Parent 1 (RR) contributes: R and R (Top).
* Parent 2 (Rr) contributes: R and r (Side).
2. Fill the Punnett Square:
* Top-Left Box: R + R $\rightarrow$ RR
* Top-Right Box: R + r $\rightarrow$ Rr
* Bottom-Left Box: R + R $\rightarrow$ RR
* Bottom-Right Box: R + r $\rightarrow$ Rr
3. Determine Phenotype:
* RR: Red petals.
* Rr: Red petals (since Red is dominant).
* Result: 100% Red petals.

Result for Problem 3: All offspring will have Red petals (50% RR, 50% Rr).

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Problem 4: Seed Pods

Scenario:
* Parent 1: Smooth seed pod (SS)
* Parent 2: Wrinkled seed pod (ss)
* Goal: Determine new plant offspring.

Step-by-Step Solution:
1. Identify Parents' Alleles:
* Parent 1 (SS) contributes: S and S (Top).
* Parent 2 (ss) contributes: s and s (Side).
2. Fill the Punnett Square:
* Top-Left Box: S + s $\rightarrow$ Ss
* Top-Right Box: S + s $\rightarrow$ Ss
* Bottom-Left Box: S + s $\rightarrow$ Ss
* Bottom-Right Box: S + s $\rightarrow$ Ss
3. Determine Phenotype:
* All offspring are Ss.
* Since S (Smooth) is dominant, all offspring will have smooth seed pods.

Result for Problem 4: All offspring will have Smooth seed pods (Genotype: Ss).

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Final Answer:
Problem 1 (Eye Color):
* Genotypes: All four boxes are Bb.
* Phenotype: All children will have Brown Eyes.

Problem 2 (Hair Type):
* Genotypes: Two boxes are Cc, two boxes are cc.
* Phenotype: 50% Curly Hair, 50% Straight Hair.

Problem 3 (Flower Petals):
* Top Row Inputs: R, R
* Side Column Inputs: R, r
* Square Results: Top-Left: RR, Top-Right: Rr, Bottom-Left: RR, Bottom-Right: Rr.
* Phenotype: 100% Red Petals.

Problem 4 (Seed Pods):
* Top Row Inputs: S, S
* Side Column Inputs: s, s
* Square Results: All four boxes are Ss.
* Phenotype: 100% Smooth Seed Pods.